hector_pose_estimation_core: added fromRotationVector() and toRotationVector() member functions as a plugin to Eigen::QuaternionBase
hector_pose_estimation_core: use Quaterniond::fromRotationVector() to predict orientation in poseupdate and added predict_pose parameter to enable/disable pose prediction
Merge branch 'catkin' of https://hector.gkmm.informatik.tu-darmstadt.de/git/tu-darmstadt-ros-pkg/hector_localization into catkin